1 /*- 2 * Copyright (C) 1996 3 * David L. Nugent. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY DAVID L. NUGENT AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL DAVID L. NUGENT OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 */ 27 28 #ifndef lint 29 static const char rcsid[] = 30 "$FreeBSD$"; 31 #endif /* not lint */ 32 33 #include <ctype.h> 34 #include <err.h> 35 #include <fcntl.h> 36 #include <sys/param.h> 37 #include <dirent.h> 38 #include <paths.h> 39 #include <termios.h> 40 #include <sys/types.h> 41 #include <sys/time.h> 42 #include <sys/resource.h> 43 #include <unistd.h> 44 #include <utmp.h> 45 #include <login_cap.h> 46 #if defined(USE_MD5RAND) 47 #include <md5.h> 48 #endif 49 #include "pw.h" 50 #include "bitmap.h" 51 52 #if (MAXLOGNAME-1) > UT_NAMESIZE 53 #define LOGNAMESIZE UT_NAMESIZE 54 #else 55 #define LOGNAMESIZE (MAXLOGNAME-1) 56 #endif 57 58 static char locked_str[] = "*LOCKED*"; 59 60 static int print_user(struct passwd * pwd, int pretty, int v7); 61 static uid_t pw_uidpolicy(struct userconf * cnf, struct cargs * args); 62 static uid_t pw_gidpolicy(struct userconf * cnf, struct cargs * args, char *nam, gid_t prefer); 63 static time_t pw_pwdpolicy(struct userconf * cnf, struct cargs * args); 64 static time_t pw_exppolicy(struct userconf * cnf, struct cargs * args); 65 static char *pw_homepolicy(struct userconf * cnf, struct cargs * args, char const * user); 66 static char *pw_shellpolicy(struct userconf * cnf, struct cargs * args, char *newshell); 67 static char *pw_password(struct userconf * cnf, struct cargs * args, char const * user); 68 static char *shell_path(char const * path, char *shells[], char *sh); 69 static void rmat(uid_t uid); 70 static void rmopie(char const * name); 71 72 /*- 73 * -C config configuration file 74 * -q quiet operation 75 * -n name login name 76 * -u uid user id 77 * -c comment user name/comment 78 * -d directory home directory 79 * -e date account expiry date 80 * -p date password expiry date 81 * -g grp primary group 82 * -G grp1,grp2 additional groups 83 * -m [ -k dir ] create and set up home 84 * -s shell name of login shell 85 * -o duplicate uid ok 86 * -L class user class 87 * -l name new login name 88 * -h fd password filehandle 89 * -H fd encrypted password filehandle 90 * -F force print or add 91 * Setting defaults: 92 * -D set user defaults 93 * -b dir default home root dir 94 * -e period default expiry period 95 * -p period default password change period 96 * -g group default group 97 * -G grp1,grp2.. default additional groups 98 * -L class default login class 99 * -k dir default home skeleton 100 * -s shell default shell 101 * -w method default password method 102 */ 103 104 int 105 pw_user(struct userconf * cnf, int mode, struct cargs * args) 106 { 107 int rc, edited = 0; 108 char *p = NULL; 109 char *passtmp; 110 struct carg *a_name; 111 struct carg *a_uid; 112 struct carg *arg; 113 struct passwd *pwd = NULL; 114 struct group *grp; 115 struct stat st; 116 char line[_PASSWORD_LEN+1]; 117 FILE *fp; 118 mode_t dmode; 119 char *dmode_c; 120 void *set = NULL; 121 122 static struct passwd fakeuser = 123 { 124 NULL, 125 "*", 126 -1, 127 -1, 128 0, 129 "", 130 "User &", 131 "/nonexistent", 132 "/bin/sh", 133 0 134 #if defined(__FreeBSD__) 135 ,0 136 #endif 137 }; 138 139 140 /* 141 * With M_NEXT, we only need to return the 142 * next uid to stdout 143 */ 144 if (mode == M_NEXT) 145 { 146 uid_t next = pw_uidpolicy(cnf, args); 147 if (getarg(args, 'q')) 148 return next; 149 printf("%ld:", (long)next); 150 pw_group(cnf, mode, args); 151 return EXIT_SUCCESS; 152 } 153 154 /* 155 * We can do all of the common legwork here 156 */ 157 158 if ((arg = getarg(args, 'b')) != NULL) { 159 cnf->home = arg->val; 160 } 161 162 if ((arg = getarg(args, 'M')) != NULL) { 163 dmode_c = arg->val; 164 if ((set = setmode(dmode_c)) == NULL) 165 errx(EX_DATAERR, "invalid directory creation mode '%s'", 166 dmode_c); 167 dmode = getmode(set, S_IRWXU | S_IRWXG | S_IRWXO); 168 free(set); 169 cnf->homemode = dmode; 170 } 171 172 /* 173 * If we'll need to use it or we're updating it, 174 * then create the base home directory if necessary 175 */ 176 if (arg != NULL || getarg(args, 'm') != NULL) { 177 int l = strlen(cnf->home); 178 179 if (l > 1 && cnf->home[l-1] == '/') /* Shave off any trailing path delimiter */ 180 cnf->home[--l] = '\0'; 181 182 if (l < 2 || *cnf->home != '/') /* Check for absolute path name */ 183 errx(EX_DATAERR, "invalid base directory for home '%s'", cnf->home); 184 185 if (stat(cnf->home, &st) == -1) { 186 char dbuf[MAXPATHLEN]; 187 188 /* 189 * This is a kludge especially for Joerg :) 190 * If the home directory would be created in the root partition, then 191 * we really create it under /usr which is likely to have more space. 192 * But we create a symlink from cnf->home -> "/usr" -> cnf->home 193 */ 194 if (strchr(cnf->home+1, '/') == NULL) { 195 strcpy(dbuf, "/usr"); 196 strncat(dbuf, cnf->home, MAXPATHLEN-5); 197 if (mkdir(dbuf, cnf->homemode) != -1 || errno == EEXIST) { 198 chown(dbuf, 0, 0); 199 /* 200 * Skip first "/" and create symlink: 201 * /home -> usr/home 202 */ 203 symlink(dbuf+1, cnf->home); 204 } 205 /* If this falls, fall back to old method */ 206 } 207 strlcpy(dbuf, cnf->home, sizeof(dbuf)); 208 p = dbuf; 209 if (stat(dbuf, &st) == -1) { 210 while ((p = strchr(++p, '/')) != NULL) { 211 *p = '\0'; 212 if (stat(dbuf, &st) == -1) { 213 if (mkdir(dbuf, cnf->homemode) == -1) 214 goto direrr; 215 chown(dbuf, 0, 0); 216 } else if (!S_ISDIR(st.st_mode)) 217 errx(EX_OSFILE, "'%s' (root home parent) is not a directory", dbuf); 218 *p = '/'; 219 } 220 } 221 if (stat(dbuf, &st) == -1) { 222 if (mkdir(dbuf, cnf->homemode) == -1) { 223 direrr: err(EX_OSFILE, "mkdir '%s'", dbuf); 224 } 225 chown(dbuf, 0, 0); 226 } 227 } else if (!S_ISDIR(st.st_mode)) 228 errx(EX_OSFILE, "root home `%s' is not a directory", cnf->home); 229 } 230 231 if ((arg = getarg(args, 'e')) != NULL) 232 cnf->expire_days = atoi(arg->val); 233 234 if ((arg = getarg(args, 'y')) != NULL) 235 cnf->nispasswd = arg->val; 236 237 if ((arg = getarg(args, 'p')) != NULL && arg->val) 238 cnf->password_days = atoi(arg->val); 239 240 if ((arg = getarg(args, 'g')) != NULL) { 241 if (!*(p = arg->val)) /* Handle empty group list specially */ 242 cnf->default_group = ""; 243 else { 244 if ((grp = GETGRNAM(p)) == NULL) { 245 if (!isdigit((unsigned char)*p) || (grp = GETGRGID((gid_t) atoi(p))) == NULL) 246 errx(EX_NOUSER, "group `%s' does not exist", p); 247 } 248 cnf->default_group = newstr(grp->gr_name); 249 } 250 } 251 if ((arg = getarg(args, 'L')) != NULL) 252 cnf->default_class = pw_checkname((u_char *)arg->val, 0); 253 254 if ((arg = getarg(args, 'G')) != NULL && arg->val) { 255 int i = 0; 256 257 for (p = strtok(arg->val, ", \t"); p != NULL; p = strtok(NULL, ", \t")) { 258 if ((grp = GETGRNAM(p)) == NULL) { 259 if (!isdigit((unsigned char)*p) || (grp = GETGRGID((gid_t) atoi(p))) == NULL) 260 errx(EX_NOUSER, "group `%s' does not exist", p); 261 } 262 if (extendarray(&cnf->groups, &cnf->numgroups, i + 2) != -1) 263 cnf->groups[i++] = newstr(grp->gr_name); 264 } 265 while (i < cnf->numgroups) 266 cnf->groups[i++] = NULL; 267 } 268 269 if ((arg = getarg(args, 'k')) != NULL) { 270 if (stat(cnf->dotdir = arg->val, &st) == -1 || !S_ISDIR(st.st_mode)) 271 errx(EX_OSFILE, "skeleton `%s' is not a directory or does not exist", cnf->dotdir); 272 } 273 274 if ((arg = getarg(args, 's')) != NULL) 275 cnf->shell_default = arg->val; 276 277 if ((arg = getarg(args, 'w')) != NULL) 278 cnf->default_password = boolean_val(arg->val, cnf->default_password); 279 if (mode == M_ADD && getarg(args, 'D')) { 280 if (getarg(args, 'n') != NULL) 281 errx(EX_DATAERR, "can't combine `-D' with `-n name'"); 282 if ((arg = getarg(args, 'u')) != NULL && (p = strtok(arg->val, ", \t")) != NULL) { 283 if ((cnf->min_uid = (uid_t) atoi(p)) == 0) 284 cnf->min_uid = 1000; 285 if ((p = strtok(NULL, " ,\t")) == NULL || (cnf->max_uid = (uid_t) atoi(p)) < cnf->min_uid) 286 cnf->max_uid = 32000; 287 } 288 if ((arg = getarg(args, 'i')) != NULL && (p = strtok(arg->val, ", \t")) != NULL) { 289 if ((cnf->min_gid = (gid_t) atoi(p)) == 0) 290 cnf->min_gid = 1000; 291 if ((p = strtok(NULL, " ,\t")) == NULL || (cnf->max_gid = (gid_t) atoi(p)) < cnf->min_gid) 292 cnf->max_gid = 32000; 293 } 294 295 arg = getarg(args, 'C'); 296 if (write_userconfig(arg ? arg->val : NULL)) 297 return EXIT_SUCCESS; 298 warn("config update"); 299 return EX_IOERR; 300 } 301 302 if (mode == M_PRINT && getarg(args, 'a')) { 303 int pretty = getarg(args, 'P') != NULL; 304 int v7 = getarg(args, '7') != NULL; 305 306 SETPWENT(); 307 while ((pwd = GETPWENT()) != NULL) 308 print_user(pwd, pretty, v7); 309 ENDPWENT(); 310 return EXIT_SUCCESS; 311 } 312 313 if ((a_name = getarg(args, 'n')) != NULL) 314 pwd = GETPWNAM(pw_checkname((u_char *)a_name->val, 0)); 315 a_uid = getarg(args, 'u'); 316 317 if (a_uid == NULL) { 318 if (a_name == NULL) 319 errx(EX_DATAERR, "user name or id required"); 320 321 /* 322 * Determine whether 'n' switch is name or uid - we don't 323 * really don't really care which we have, but we need to 324 * know. 325 */ 326 if (mode != M_ADD && pwd == NULL 327 && strspn(a_name->val, "0123456789") == strlen(a_name->val) 328 && atoi(a_name->val) > 0) { /* Assume uid */ 329 (a_uid = a_name)->ch = 'u'; 330 a_name = NULL; 331 } 332 } 333 334 /* 335 * Update, delete & print require that the user exists 336 */ 337 if (mode == M_UPDATE || mode == M_DELETE || 338 mode == M_PRINT || mode == M_LOCK || mode == M_UNLOCK) { 339 340 if (a_name == NULL && pwd == NULL) /* Try harder */ 341 pwd = GETPWUID(atoi(a_uid->val)); 342 343 if (pwd == NULL) { 344 if (mode == M_PRINT && getarg(args, 'F')) { 345 fakeuser.pw_name = a_name ? a_name->val : "nouser"; 346 fakeuser.pw_uid = a_uid ? (uid_t) atol(a_uid->val) : -1; 347 return print_user(&fakeuser, 348 getarg(args, 'P') != NULL, 349 getarg(args, '7') != NULL); 350 } 351 if (a_name == NULL) 352 errx(EX_NOUSER, "no such uid `%s'", a_uid->val); 353 errx(EX_NOUSER, "no such user `%s'", a_name->val); 354 } 355 356 if (a_name == NULL) /* May be needed later */ 357 a_name = addarg(args, 'n', newstr(pwd->pw_name)); 358 359 /* 360 * The M_LOCK and M_UNLOCK functions simply add or remove 361 * a "*LOCKED*" prefix from in front of the password to 362 * prevent it decoding correctly, and therefore prevents 363 * access. Of course, this only prevents access via 364 * password authentication (not ssh, kerberos or any 365 * other method that does not use the UNIX password) but 366 * that is a known limitation. 367 */ 368 369 if (mode == M_LOCK) { 370 if (strncmp(pwd->pw_passwd, locked_str, sizeof(locked_str)-1) == 0) 371 errx(EX_DATAERR, "user '%s' is already locked", pwd->pw_name); 372 passtmp = malloc(strlen(pwd->pw_passwd) + sizeof(locked_str)); 373 if (passtmp == NULL) /* disaster */ 374 errx(EX_UNAVAILABLE, "out of memory"); 375 strcpy(passtmp, locked_str); 376 strcat(passtmp, pwd->pw_passwd); 377 pwd->pw_passwd = passtmp; 378 edited = 1; 379 } else if (mode == M_UNLOCK) { 380 if (strncmp(pwd->pw_passwd, locked_str, sizeof(locked_str)-1) != 0) 381 errx(EX_DATAERR, "user '%s' is not locked", pwd->pw_name); 382 pwd->pw_passwd += sizeof(locked_str)-1; 383 edited = 1; 384 } else if (mode == M_DELETE) { 385 /* 386 * Handle deletions now 387 */ 388 char file[MAXPATHLEN]; 389 char home[MAXPATHLEN]; 390 uid_t uid = pwd->pw_uid; 391 392 if (strcmp(pwd->pw_name, "root") == 0) 393 errx(EX_DATAERR, "cannot remove user 'root'"); 394 395 if (!PWALTDIR()) { 396 /* 397 * Remove opie record from /etc/opiekeys 398 */ 399 400 rmopie(pwd->pw_name); 401 402 /* 403 * Remove crontabs 404 */ 405 sprintf(file, "/var/cron/tabs/%s", pwd->pw_name); 406 if (access(file, F_OK) == 0) { 407 sprintf(file, "crontab -u %s -r", pwd->pw_name); 408 system(file); 409 } 410 } 411 /* 412 * Save these for later, since contents of pwd may be 413 * invalidated by deletion 414 */ 415 sprintf(file, "%s/%s", _PATH_MAILDIR, pwd->pw_name); 416 strlcpy(home, pwd->pw_dir, sizeof(home)); 417 418 rc = delpwent(pwd); 419 if (rc == -1) 420 err(EX_IOERR, "user '%s' does not exist", pwd->pw_name); 421 else if (rc != 0) { 422 warn("passwd update"); 423 return EX_IOERR; 424 } 425 426 if (cnf->nispasswd && *cnf->nispasswd=='/') { 427 rc = delnispwent(cnf->nispasswd, a_name->val); 428 if (rc == -1) 429 warnx("WARNING: user '%s' does not exist in NIS passwd", pwd->pw_name); 430 else if (rc != 0) 431 warn("WARNING: NIS passwd update"); 432 /* non-fatal */ 433 } 434 435 editgroups(a_name->val, NULL); 436 437 pw_log(cnf, mode, W_USER, "%s(%ld) account removed", a_name->val, (long) uid); 438 439 if (!PWALTDIR()) { 440 /* 441 * Remove mail file 442 */ 443 remove(file); 444 445 /* 446 * Remove at jobs 447 */ 448 if (getpwuid(uid) == NULL) 449 rmat(uid); 450 451 /* 452 * Remove home directory and contents 453 */ 454 if (getarg(args, 'r') != NULL && *home == '/' && getpwuid(uid) == NULL) { 455 if (stat(home, &st) != -1) { 456 rm_r(home, uid); 457 pw_log(cnf, mode, W_USER, "%s(%ld) home '%s' %sremoved", 458 a_name->val, (long) uid, home, 459 stat(home, &st) == -1 ? "" : "not completely "); 460 } 461 } 462 } 463 return EXIT_SUCCESS; 464 } else if (mode == M_PRINT) 465 return print_user(pwd, 466 getarg(args, 'P') != NULL, 467 getarg(args, '7') != NULL); 468 469 /* 470 * The rest is edit code 471 */ 472 if ((arg = getarg(args, 'l')) != NULL) { 473 if (strcmp(pwd->pw_name, "root") == 0) 474 errx(EX_DATAERR, "can't rename `root' account"); 475 pwd->pw_name = pw_checkname((u_char *)arg->val, 0); 476 edited = 1; 477 } 478 479 if ((arg = getarg(args, 'u')) != NULL && isdigit((unsigned char)*arg->val)) { 480 pwd->pw_uid = (uid_t) atol(arg->val); 481 edited = 1; 482 if (pwd->pw_uid != 0 && strcmp(pwd->pw_name, "root") == 0) 483 errx(EX_DATAERR, "can't change uid of `root' account"); 484 if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0) 485 warnx("WARNING: account `%s' will have a uid of 0 (superuser access!)", pwd->pw_name); 486 } 487 488 if ((arg = getarg(args, 'g')) != NULL && pwd->pw_uid != 0) { /* Already checked this */ 489 gid_t newgid = (gid_t) GETGRNAM(cnf->default_group)->gr_gid; 490 if (newgid != pwd->pw_gid) { 491 edited = 1; 492 pwd->pw_gid = newgid; 493 } 494 } 495 496 if ((arg = getarg(args, 'p')) != NULL) { 497 if (*arg->val == '\0' || strcmp(arg->val, "0") == 0) { 498 if (pwd->pw_change != 0) { 499 pwd->pw_change = 0; 500 edited = 1; 501 } 502 } 503 else { 504 time_t now = time(NULL); 505 time_t expire = parse_date(now, arg->val); 506 507 if (now == expire) 508 errx(EX_DATAERR, "invalid password change date `%s'", arg->val); 509 if (pwd->pw_change != expire) { 510 pwd->pw_change = expire; 511 edited = 1; 512 } 513 } 514 } 515 516 if ((arg = getarg(args, 'e')) != NULL) { 517 if (*arg->val == '\0' || strcmp(arg->val, "0") == 0) { 518 if (pwd->pw_expire != 0) { 519 pwd->pw_expire = 0; 520 edited = 1; 521 } 522 } 523 else { 524 time_t now = time(NULL); 525 time_t expire = parse_date(now, arg->val); 526 527 if (now == expire) 528 errx(EX_DATAERR, "invalid account expiry date `%s'", arg->val); 529 if (pwd->pw_expire != expire) { 530 pwd->pw_expire = expire; 531 edited = 1; 532 } 533 } 534 } 535 536 if ((arg = getarg(args, 's')) != NULL) { 537 char *shell = shell_path(cnf->shelldir, cnf->shells, arg->val); 538 if (shell == NULL) 539 shell = ""; 540 if (strcmp(shell, pwd->pw_shell) != 0) { 541 pwd->pw_shell = shell; 542 edited = 1; 543 } 544 } 545 546 if (getarg(args, 'L')) { 547 if (cnf->default_class == NULL) 548 cnf->default_class = ""; 549 if (strcmp(pwd->pw_class, cnf->default_class) != 0) { 550 pwd->pw_class = cnf->default_class; 551 edited = 1; 552 } 553 } 554 555 if ((arg = getarg(args, 'd')) != NULL) { 556 if (strcmp(pwd->pw_dir, arg->val)) 557 edited = 1; 558 if (stat(pwd->pw_dir = arg->val, &st) == -1) { 559 if (getarg(args, 'm') == NULL && strcmp(pwd->pw_dir, "/nonexistent") != 0) 560 warnx("WARNING: home `%s' does not exist", pwd->pw_dir); 561 } else if (!S_ISDIR(st.st_mode)) 562 warnx("WARNING: home `%s' is not a directory", pwd->pw_dir); 563 } 564 565 if ((arg = getarg(args, 'w')) != NULL && 566 getarg(args, 'h') == NULL && getarg(args, 'H') == NULL) { 567 login_cap_t *lc; 568 569 lc = login_getpwclass(pwd); 570 if (lc == NULL || 571 login_setcryptfmt(lc, "md5", NULL) == NULL) 572 warn("setting crypt(3) format"); 573 login_close(lc); 574 pwd->pw_passwd = pw_password(cnf, args, pwd->pw_name); 575 edited = 1; 576 } 577 578 } else { 579 login_cap_t *lc; 580 581 /* 582 * Add code 583 */ 584 585 if (a_name == NULL) /* Required */ 586 errx(EX_DATAERR, "login name required"); 587 else if ((pwd = GETPWNAM(a_name->val)) != NULL) /* Exists */ 588 errx(EX_DATAERR, "login name `%s' already exists", a_name->val); 589 590 /* 591 * Now, set up defaults for a new user 592 */ 593 pwd = &fakeuser; 594 pwd->pw_name = a_name->val; 595 pwd->pw_class = cnf->default_class ? cnf->default_class : ""; 596 pwd->pw_uid = pw_uidpolicy(cnf, args); 597 pwd->pw_gid = pw_gidpolicy(cnf, args, pwd->pw_name, (gid_t) pwd->pw_uid); 598 pwd->pw_change = pw_pwdpolicy(cnf, args); 599 pwd->pw_expire = pw_exppolicy(cnf, args); 600 pwd->pw_dir = pw_homepolicy(cnf, args, pwd->pw_name); 601 pwd->pw_shell = pw_shellpolicy(cnf, args, NULL); 602 lc = login_getpwclass(pwd); 603 if (lc == NULL || login_setcryptfmt(lc, "md5", NULL) == NULL) 604 warn("setting crypt(3) format"); 605 login_close(lc); 606 pwd->pw_passwd = pw_password(cnf, args, pwd->pw_name); 607 edited = 1; 608 609 if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0) 610 warnx("WARNING: new account `%s' has a uid of 0 (superuser access!)", pwd->pw_name); 611 } 612 613 /* 614 * Shared add/edit code 615 */ 616 if ((arg = getarg(args, 'c')) != NULL) { 617 char *gecos = pw_checkname((u_char *)arg->val, 1); 618 if (strcmp(pwd->pw_gecos, gecos) != 0) { 619 pwd->pw_gecos = gecos; 620 edited = 1; 621 } 622 } 623 624 if ((arg = getarg(args, 'h')) != NULL || 625 (arg = getarg(args, 'H')) != NULL) { 626 if (strcmp(arg->val, "-") == 0) { 627 if (!pwd->pw_passwd || *pwd->pw_passwd != '*') { 628 pwd->pw_passwd = "*"; /* No access */ 629 edited = 1; 630 } 631 } else { 632 int fd = atoi(arg->val); 633 int precrypt = (arg->ch == 'H'); 634 int b; 635 int istty = isatty(fd); 636 struct termios t; 637 login_cap_t *lc; 638 639 if (istty) { 640 if (tcgetattr(fd, &t) == -1) 641 istty = 0; 642 else { 643 struct termios n = t; 644 645 /* Disable echo */ 646 n.c_lflag &= ~(ECHO); 647 tcsetattr(fd, TCSANOW, &n); 648 printf("%s%spassword for user %s:", 649 (mode == M_UPDATE) ? "new " : "", 650 precrypt ? "encrypted " : "", 651 pwd->pw_name); 652 fflush(stdout); 653 } 654 } 655 b = read(fd, line, sizeof(line) - 1); 656 if (istty) { /* Restore state */ 657 tcsetattr(fd, TCSANOW, &t); 658 fputc('\n', stdout); 659 fflush(stdout); 660 } 661 if (b < 0) { 662 warn("-%c file descriptor", precrypt ? 'H' : 663 'h'); 664 return EX_IOERR; 665 } 666 line[b] = '\0'; 667 if ((p = strpbrk(line, "\r\n")) != NULL) 668 *p = '\0'; 669 if (!*line) 670 errx(EX_DATAERR, "empty password read on file descriptor %d", fd); 671 if (precrypt) { 672 if (strchr(line, ':') != NULL) 673 return EX_DATAERR; 674 pwd->pw_passwd = line; 675 } else { 676 lc = login_getpwclass(pwd); 677 if (lc == NULL || 678 login_setcryptfmt(lc, "md5", NULL) == NULL) 679 warn("setting crypt(3) format"); 680 login_close(lc); 681 pwd->pw_passwd = pw_pwcrypt(line); 682 } 683 edited = 1; 684 } 685 } 686 687 /* 688 * Special case: -N only displays & exits 689 */ 690 if (getarg(args, 'N') != NULL) 691 return print_user(pwd, 692 getarg(args, 'P') != NULL, 693 getarg(args, '7') != NULL); 694 695 if (mode == M_ADD) { 696 edited = 1; /* Always */ 697 rc = addpwent(pwd); 698 if (rc == -1) { 699 warnx("user '%s' already exists", pwd->pw_name); 700 return EX_IOERR; 701 } else if (rc != 0) { 702 warn("passwd file update"); 703 return EX_IOERR; 704 } 705 if (cnf->nispasswd && *cnf->nispasswd=='/') { 706 rc = addnispwent(cnf->nispasswd, pwd); 707 if (rc == -1) 708 warnx("User '%s' already exists in NIS passwd", pwd->pw_name); 709 else 710 warn("NIS passwd update"); 711 /* NOTE: we treat NIS-only update errors as non-fatal */ 712 } 713 } else if (mode == M_UPDATE || mode == M_LOCK || mode == M_UNLOCK) { 714 if (edited) { /* Only updated this if required */ 715 rc = chgpwent(a_name->val, pwd); 716 if (rc == -1) { 717 warnx("user '%s' does not exist (NIS?)", pwd->pw_name); 718 return EX_IOERR; 719 } else if (rc != 0) { 720 warn("passwd file update"); 721 return EX_IOERR; 722 } 723 if ( cnf->nispasswd && *cnf->nispasswd=='/') { 724 rc = chgnispwent(cnf->nispasswd, a_name->val, pwd); 725 if (rc == -1) 726 warn("User '%s' not found in NIS passwd", pwd->pw_name); 727 else 728 warn("NIS passwd update"); 729 /* NOTE: NIS-only update errors are not fatal */ 730 } 731 } 732 } 733 734 /* 735 * Ok, user is created or changed - now edit group file 736 */ 737 738 if (mode == M_ADD || getarg(args, 'G') != NULL) 739 editgroups(pwd->pw_name, cnf->groups); 740 741 /* go get a current version of pwd */ 742 pwd = GETPWNAM(a_name->val); 743 if (pwd == NULL) { 744 /* This will fail when we rename, so special case that */ 745 if (mode == M_UPDATE && (arg = getarg(args, 'l')) != NULL) { 746 a_name->val = arg->val; /* update new name */ 747 pwd = GETPWNAM(a_name->val); /* refetch renamed rec */ 748 } 749 } 750 if (pwd == NULL) /* can't go on without this */ 751 errx(EX_NOUSER, "user '%s' disappeared during update", a_name->val); 752 753 grp = GETGRGID(pwd->pw_gid); 754 pw_log(cnf, mode, W_USER, "%s(%ld):%s(%ld):%s:%s:%s", 755 pwd->pw_name, (long) pwd->pw_uid, 756 grp ? grp->gr_name : "unknown", (long) (grp ? grp->gr_gid : -1), 757 pwd->pw_gecos, pwd->pw_dir, pwd->pw_shell); 758 759 /* 760 * If adding, let's touch and chown the user's mail file. This is not 761 * strictly necessary under BSD with a 0755 maildir but it also 762 * doesn't hurt anything to create the empty mailfile 763 */ 764 if (mode == M_ADD) { 765 if (!PWALTDIR()) { 766 sprintf(line, "%s/%s", _PATH_MAILDIR, pwd->pw_name); 767 close(open(line, O_RDWR | O_CREAT, 0600)); /* Preserve contents & 768 * mtime */ 769 chown(line, pwd->pw_uid, pwd->pw_gid); 770 } 771 } 772 773 /* 774 * Let's create and populate the user's home directory. Note 775 * that this also `works' for editing users if -m is used, but 776 * existing files will *not* be overwritten. 777 */ 778 if (!PWALTDIR() && getarg(args, 'm') != NULL && pwd->pw_dir && *pwd->pw_dir == '/' && pwd->pw_dir[1]) { 779 copymkdir(pwd->pw_dir, cnf->dotdir, cnf->homemode, pwd->pw_uid, pwd->pw_gid); 780 pw_log(cnf, mode, W_USER, "%s(%ld) home %s made", 781 pwd->pw_name, (long) pwd->pw_uid, pwd->pw_dir); 782 } 783 784 785 /* 786 * Finally, send mail to the new user as well, if we are asked to 787 */ 788 if (mode == M_ADD && !PWALTDIR() && cnf->newmail && *cnf->newmail && (fp = fopen(cnf->newmail, "r")) != NULL) { 789 FILE *pfp = popen(_PATH_SENDMAIL " -t", "w"); 790 791 if (pfp == NULL) 792 warn("sendmail"); 793 else { 794 fprintf(pfp, "From: root\n" "To: %s\n" "Subject: Welcome!\n\n", pwd->pw_name); 795 while (fgets(line, sizeof(line), fp) != NULL) { 796 /* Do substitutions? */ 797 fputs(line, pfp); 798 } 799 pclose(pfp); 800 pw_log(cnf, mode, W_USER, "%s(%ld) new user mail sent", 801 pwd->pw_name, (long) pwd->pw_uid); 802 } 803 fclose(fp); 804 } 805 806 return EXIT_SUCCESS; 807 } 808 809 810 static uid_t 811 pw_uidpolicy(struct userconf * cnf, struct cargs * args) 812 { 813 struct passwd *pwd; 814 uid_t uid = (uid_t) - 1; 815 struct carg *a_uid = getarg(args, 'u'); 816 817 /* 818 * Check the given uid, if any 819 */ 820 if (a_uid != NULL) { 821 uid = (uid_t) atol(a_uid->val); 822 823 if ((pwd = GETPWUID(uid)) != NULL && getarg(args, 'o') == NULL) 824 errx(EX_DATAERR, "uid `%ld' has already been allocated", (long) pwd->pw_uid); 825 } else { 826 struct bitmap bm; 827 828 /* 829 * We need to allocate the next available uid under one of 830 * two policies a) Grab the first unused uid b) Grab the 831 * highest possible unused uid 832 */ 833 if (cnf->min_uid >= cnf->max_uid) { /* Sanity 834 * claus^H^H^H^Hheck */ 835 cnf->min_uid = 1000; 836 cnf->max_uid = 32000; 837 } 838 bm = bm_alloc(cnf->max_uid - cnf->min_uid + 1); 839 840 /* 841 * Now, let's fill the bitmap from the password file 842 */ 843 SETPWENT(); 844 while ((pwd = GETPWENT()) != NULL) 845 if (pwd->pw_uid >= (uid_t) cnf->min_uid && pwd->pw_uid <= (uid_t) cnf->max_uid) 846 bm_setbit(&bm, pwd->pw_uid - cnf->min_uid); 847 ENDPWENT(); 848 849 /* 850 * Then apply the policy, with fallback to reuse if necessary 851 */ 852 if (cnf->reuse_uids || (uid = (uid_t) (bm_lastset(&bm) + cnf->min_uid + 1)) > cnf->max_uid) 853 uid = (uid_t) (bm_firstunset(&bm) + cnf->min_uid); 854 855 /* 856 * Another sanity check 857 */ 858 if (uid < cnf->min_uid || uid > cnf->max_uid) 859 errx(EX_SOFTWARE, "unable to allocate a new uid - range fully used"); 860 bm_dealloc(&bm); 861 } 862 return uid; 863 } 864 865 866 static uid_t 867 pw_gidpolicy(struct userconf * cnf, struct cargs * args, char *nam, gid_t prefer) 868 { 869 struct group *grp; 870 gid_t gid = (uid_t) - 1; 871 struct carg *a_gid = getarg(args, 'g'); 872 873 /* 874 * If no arg given, see if default can help out 875 */ 876 if (a_gid == NULL && cnf->default_group && *cnf->default_group) 877 a_gid = addarg(args, 'g', cnf->default_group); 878 879 /* 880 * Check the given gid, if any 881 */ 882 SETGRENT(); 883 if (a_gid != NULL) { 884 if ((grp = GETGRNAM(a_gid->val)) == NULL) { 885 gid = (gid_t) atol(a_gid->val); 886 if ((gid == 0 && !isdigit((unsigned char)*a_gid->val)) || (grp = GETGRGID(gid)) == NULL) 887 errx(EX_NOUSER, "group `%s' is not defined", a_gid->val); 888 } 889 gid = grp->gr_gid; 890 } else if ((grp = GETGRNAM(nam)) != NULL && grp->gr_mem[0] == NULL) { 891 gid = grp->gr_gid; /* Already created? Use it anyway... */ 892 } else { 893 struct cargs grpargs; 894 char tmp[32]; 895 896 LIST_INIT(&grpargs); 897 addarg(&grpargs, 'n', nam); 898 899 /* 900 * We need to auto-create a group with the user's name. We 901 * can send all the appropriate output to our sister routine 902 * bit first see if we can create a group with gid==uid so we 903 * can keep the user and group ids in sync. We purposely do 904 * NOT check the gid range if we can force the sync. If the 905 * user's name dups an existing group, then the group add 906 * function will happily handle that case for us and exit. 907 */ 908 if (GETGRGID(prefer) == NULL) { 909 sprintf(tmp, "%lu", (unsigned long) prefer); 910 addarg(&grpargs, 'g', tmp); 911 } 912 if (getarg(args, 'N')) 913 { 914 addarg(&grpargs, 'N', NULL); 915 addarg(&grpargs, 'q', NULL); 916 gid = pw_group(cnf, M_NEXT, &grpargs); 917 } 918 else 919 { 920 pw_group(cnf, M_ADD, &grpargs); 921 if ((grp = GETGRNAM(nam)) != NULL) 922 gid = grp->gr_gid; 923 } 924 a_gid = LIST_FIRST(&grpargs); 925 while (a_gid != NULL) { 926 struct carg *t = LIST_NEXT(a_gid, list); 927 LIST_REMOVE(a_gid, list); 928 a_gid = t; 929 } 930 } 931 ENDGRENT(); 932 return gid; 933 } 934 935 936 static time_t 937 pw_pwdpolicy(struct userconf * cnf, struct cargs * args) 938 { 939 time_t result = 0; 940 time_t now = time(NULL); 941 struct carg *arg = getarg(args, 'p'); 942 943 if (arg != NULL) { 944 if ((result = parse_date(now, arg->val)) == now) 945 errx(EX_DATAERR, "invalid date/time `%s'", arg->val); 946 } else if (cnf->password_days > 0) 947 result = now + ((long) cnf->password_days * 86400L); 948 return result; 949 } 950 951 952 static time_t 953 pw_exppolicy(struct userconf * cnf, struct cargs * args) 954 { 955 time_t result = 0; 956 time_t now = time(NULL); 957 struct carg *arg = getarg(args, 'e'); 958 959 if (arg != NULL) { 960 if ((result = parse_date(now, arg->val)) == now) 961 errx(EX_DATAERR, "invalid date/time `%s'", arg->val); 962 } else if (cnf->expire_days > 0) 963 result = now + ((long) cnf->expire_days * 86400L); 964 return result; 965 } 966 967 968 static char * 969 pw_homepolicy(struct userconf * cnf, struct cargs * args, char const * user) 970 { 971 struct carg *arg = getarg(args, 'd'); 972 973 if (arg) 974 return arg->val; 975 else { 976 static char home[128]; 977 978 if (cnf->home == NULL || *cnf->home == '\0') 979 errx(EX_CONFIG, "no base home directory set"); 980 sprintf(home, "%s/%s", cnf->home, user); 981 return home; 982 } 983 } 984 985 static char * 986 shell_path(char const * path, char *shells[], char *sh) 987 { 988 if (sh != NULL && (*sh == '/' || *sh == '\0')) 989 return sh; /* specified full path or forced none */ 990 else { 991 char *p; 992 char paths[_UC_MAXLINE]; 993 994 /* 995 * We need to search paths 996 */ 997 strlcpy(paths, path, sizeof(paths)); 998 for (p = strtok(paths, ": \t\r\n"); p != NULL; p = strtok(NULL, ": \t\r\n")) { 999 int i; 1000 static char shellpath[256]; 1001 1002 if (sh != NULL) { 1003 sprintf(shellpath, "%s/%s", p, sh); 1004 if (access(shellpath, X_OK) == 0) 1005 return shellpath; 1006 } else 1007 for (i = 0; i < _UC_MAXSHELLS && shells[i] != NULL; i++) { 1008 sprintf(shellpath, "%s/%s", p, shells[i]); 1009 if (access(shellpath, X_OK) == 0) 1010 return shellpath; 1011 } 1012 } 1013 if (sh == NULL) 1014 errx(EX_OSFILE, "can't find shell `%s' in shell paths", sh); 1015 errx(EX_CONFIG, "no default shell available or defined"); 1016 return NULL; 1017 } 1018 } 1019 1020 1021 static char * 1022 pw_shellpolicy(struct userconf * cnf, struct cargs * args, char *newshell) 1023 { 1024 char *sh = newshell; 1025 struct carg *arg = getarg(args, 's'); 1026 1027 if (newshell == NULL && arg != NULL) 1028 sh = arg->val; 1029 return shell_path(cnf->shelldir, cnf->shells, sh ? sh : cnf->shell_default); 1030 } 1031 1032 static char const chars[] = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ."; 1033 1034 char * 1035 pw_pwcrypt(char *password) 1036 { 1037 int i; 1038 char salt[12]; 1039 1040 static char buf[256]; 1041 1042 /* 1043 * Calculate a salt value 1044 */ 1045 for (i = 0; i < 8; i++) 1046 salt[i] = chars[arc4random() % 63]; 1047 salt[i] = '\0'; 1048 1049 return strcpy(buf, crypt(password, salt)); 1050 } 1051 1052 #if defined(USE_MD5RAND) 1053 u_char * 1054 pw_getrand(u_char *buf, int len) /* cryptographically secure rng */ 1055 { 1056 int i; 1057 for (i=0;i<len;i+=16) { 1058 u_char ubuf[16]; 1059 1060 MD5_CTX md5_ctx; 1061 struct timeval tv, tvo; 1062 struct rusage ru; 1063 int n=0; 1064 int t; 1065 1066 MD5Init (&md5_ctx); 1067 t=getpid(); 1068 MD5Update (&md5_ctx, (u_char*)&t, sizeof t); 1069 t=getppid(); 1070 MD5Update (&md5_ctx, (u_char*)&t, sizeof t); 1071 gettimeofday (&tvo, NULL); 1072 do { 1073 getrusage (RUSAGE_SELF, &ru); 1074 MD5Update (&md5_ctx, (u_char*)&ru, sizeof ru); 1075 gettimeofday (&tv, NULL); 1076 MD5Update (&md5_ctx, (u_char*)&tv, sizeof tv); 1077 } while (n++<20 || tv.tv_usec-tvo.tv_usec<100*1000); 1078 MD5Final (ubuf, &md5_ctx); 1079 memcpy(buf+i, ubuf, MIN(16, len-i)); 1080 } 1081 return buf; 1082 } 1083 1084 #else /* Portable version */ 1085 1086 static u_char * 1087 pw_getrand(u_char *buf, int len) 1088 { 1089 int i; 1090 1091 for (i = 0; i < len; i++) { 1092 unsigned long val = arc4random(); 1093 /* Use all bits in the random value */ 1094 buf[i]=(u_char)((val >> 24) ^ (val >> 16) ^ (val >> 8) ^ val); 1095 } 1096 return buf; 1097 } 1098 1099 #endif 1100 1101 static char * 1102 pw_password(struct userconf * cnf, struct cargs * args, char const * user) 1103 { 1104 int i, l; 1105 char pwbuf[32]; 1106 u_char rndbuf[sizeof pwbuf]; 1107 1108 switch (cnf->default_password) { 1109 case -1: /* Random password */ 1110 l = (arc4random() % 8 + 8); /* 8 - 16 chars */ 1111 pw_getrand(rndbuf, l); 1112 for (i = 0; i < l; i++) 1113 pwbuf[i] = chars[rndbuf[i] % (sizeof(chars)-1)]; 1114 pwbuf[i] = '\0'; 1115 1116 /* 1117 * We give this information back to the user 1118 */ 1119 if (getarg(args, 'h') == NULL && getarg(args, 'H') == NULL && 1120 getarg(args, 'N') == NULL) { 1121 if (isatty(STDOUT_FILENO)) 1122 printf("Password for '%s' is: ", user); 1123 printf("%s\n", pwbuf); 1124 fflush(stdout); 1125 } 1126 break; 1127 1128 case -2: /* No password at all! */ 1129 return ""; 1130 1131 case 0: /* No login - default */ 1132 default: 1133 return "*"; 1134 1135 case 1: /* user's name */ 1136 strlcpy(pwbuf, user, sizeof(pwbuf)); 1137 break; 1138 } 1139 return pw_pwcrypt(pwbuf); 1140 } 1141 1142 1143 static int 1144 print_user(struct passwd * pwd, int pretty, int v7) 1145 { 1146 if (!pretty) { 1147 char buf[_UC_MAXLINE]; 1148 1149 fmtpwentry(buf, pwd, v7 ? PWF_PASSWD : PWF_STANDARD); 1150 fputs(buf, stdout); 1151 } else { 1152 int j; 1153 char *p; 1154 struct group *grp = GETGRGID(pwd->pw_gid); 1155 char uname[60] = "User &", office[60] = "[None]", 1156 wphone[60] = "[None]", hphone[60] = "[None]"; 1157 char acexpire[32] = "[None]", pwexpire[32] = "[None]"; 1158 struct tm * tptr; 1159 1160 if ((p = strtok(pwd->pw_gecos, ",")) != NULL) { 1161 strlcpy(uname, p, sizeof(uname)); 1162 if ((p = strtok(NULL, ",")) != NULL) { 1163 strlcpy(office, p, sizeof(office)); 1164 if ((p = strtok(NULL, ",")) != NULL) { 1165 strlcpy(wphone, p, sizeof(wphone)); 1166 if ((p = strtok(NULL, "")) != NULL) { 1167 strlcpy(hphone, p, 1168 sizeof(hphone)); 1169 } 1170 } 1171 } 1172 } 1173 /* 1174 * Handle '&' in gecos field 1175 */ 1176 if ((p = strchr(uname, '&')) != NULL) { 1177 int l = strlen(pwd->pw_name); 1178 int m = strlen(p); 1179 1180 memmove(p + l, p + 1, m); 1181 memmove(p, pwd->pw_name, l); 1182 *p = (char) toupper((unsigned char)*p); 1183 } 1184 if (pwd->pw_expire > (time_t)0 && (tptr = localtime(&pwd->pw_expire)) != NULL) 1185 strftime(acexpire, sizeof acexpire, "%c", tptr); 1186 if (pwd->pw_change > (time_t)0 && (tptr = localtime(&pwd->pw_change)) != NULL) 1187 strftime(pwexpire, sizeof pwexpire, "%c", tptr); 1188 printf("Login Name: %-15s #%-12ld Group: %-15s #%ld\n" 1189 " Full Name: %s\n" 1190 " Home: %-26.26s Class: %s\n" 1191 " Shell: %-26.26s Office: %s\n" 1192 "Work Phone: %-26.26s Home Phone: %s\n" 1193 "Acc Expire: %-26.26s Pwd Expire: %s\n", 1194 pwd->pw_name, (long) pwd->pw_uid, 1195 grp ? grp->gr_name : "(invalid)", (long) pwd->pw_gid, 1196 uname, pwd->pw_dir, pwd->pw_class, 1197 pwd->pw_shell, office, wphone, hphone, 1198 acexpire, pwexpire); 1199 SETGRENT(); 1200 j = 0; 1201 while ((grp=GETGRENT()) != NULL) 1202 { 1203 int i = 0; 1204 while (grp->gr_mem[i] != NULL) 1205 { 1206 if (strcmp(grp->gr_mem[i], pwd->pw_name)==0) 1207 { 1208 printf(j++ == 0 ? " Groups: %s" : ",%s", grp->gr_name); 1209 break; 1210 } 1211 ++i; 1212 } 1213 } 1214 ENDGRENT(); 1215 printf("%s", j ? "\n" : ""); 1216 } 1217 return EXIT_SUCCESS; 1218 } 1219 1220 char * 1221 pw_checkname(u_char *name, int gecos) 1222 { 1223 char showch[8]; 1224 u_char const *badchars, *ch, *showtype; 1225 int reject; 1226 1227 ch = name; 1228 reject = 0; 1229 if (gecos) { 1230 /* See if the name is valid as a gecos (comment) field. */ 1231 badchars = ":!@"; 1232 showtype = "gecos field"; 1233 } else { 1234 /* See if the name is valid as a userid or group. */ 1235 badchars = " ,\t:+&#%$^()!@~*?<>=|\\/\""; 1236 showtype = "userid/group name"; 1237 /* Userids and groups can not have a leading '-'. */ 1238 if (*ch == '-') 1239 reject = 1; 1240 } 1241 if (!reject) { 1242 while (*ch) { 1243 if (strchr(badchars, *ch) != NULL || *ch < ' ' || 1244 *ch == 127) { 1245 reject = 1; 1246 break; 1247 } 1248 /* 8-bit characters are only allowed in GECOS fields */ 1249 if (!gecos && (*ch & 0x80)) { 1250 reject = 1; 1251 break; 1252 } 1253 ch++; 1254 } 1255 } 1256 /* 1257 * A `$' is allowed as the final character for userids and groups, 1258 * mainly for the benefit of samba. 1259 */ 1260 if (reject && !gecos) { 1261 if (*ch == '$' && *(ch + 1) == '\0') { 1262 reject = 0; 1263 ch++; 1264 } 1265 } 1266 if (reject) { 1267 snprintf(showch, sizeof(showch), (*ch >= ' ' && *ch < 127) 1268 ? "`%c'" : "0x%02x", *ch); 1269 errx(EX_DATAERR, "invalid character %s at position %d in %s", 1270 showch, (ch - name), showtype); 1271 } 1272 if (!gecos && (ch - name) > LOGNAMESIZE) 1273 errx(EX_DATAERR, "name too long `%s' (max is %d)", name, 1274 LOGNAMESIZE); 1275 return (char *)name; 1276 } 1277 1278 1279 static void 1280 rmat(uid_t uid) 1281 { 1282 DIR *d = opendir("/var/at/jobs"); 1283 1284 if (d != NULL) { 1285 struct dirent *e; 1286 1287 while ((e = readdir(d)) != NULL) { 1288 struct stat st; 1289 1290 if (strncmp(e->d_name, ".lock", 5) != 0 && 1291 stat(e->d_name, &st) == 0 && 1292 !S_ISDIR(st.st_mode) && 1293 st.st_uid == uid) { 1294 char tmp[MAXPATHLEN]; 1295 1296 sprintf(tmp, "/usr/bin/atrm %s", e->d_name); 1297 system(tmp); 1298 } 1299 } 1300 closedir(d); 1301 } 1302 } 1303 1304 static void 1305 rmopie(char const * name) 1306 { 1307 static const char etcopie[] = "/etc/opiekeys"; 1308 FILE *fp = fopen(etcopie, "r+"); 1309 1310 if (fp != NULL) { 1311 char tmp[1024]; 1312 off_t atofs = 0; 1313 int length = strlen(name); 1314 1315 while (fgets(tmp, sizeof tmp, fp) != NULL) { 1316 if (strncmp(name, tmp, length) == 0 && tmp[length]==' ') { 1317 if (fseek(fp, atofs, SEEK_SET) == 0) { 1318 fwrite("#", 1, 1, fp); /* Comment username out */ 1319 } 1320 break; 1321 } 1322 atofs = ftell(fp); 1323 } 1324 /* 1325 * If we got an error of any sort, don't update! 1326 */ 1327 fclose(fp); 1328 } 1329 } 1330 1331